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Full text of "The manufacture and properties of iron and steel"

S56                        METALLURGY OP IRON" AND STEEL.
The burden of this chapter is to the effect that segregation is ever present; that the extent -of the concentration bears a relation to the .proportion of impurities present; that manganese, copper and nickel do not segregate to any extent,, but "that certain portions of the finished material will contain a higher percentage of carbon, phosphorus and sulphur than will be found in the tests cut from the edge of plates and bars, or than will be shown by the preliminary ;test. It is also indicated that a degree of uniformity, sufficient for practical needs, may be expected if the initial metal is low in phosphorus and sulphur. '